where to get fasteners to put car back together

i put them away so i wouldnt not lose them now cant find them lol need screws for head light rings ,also to put tail lights back in, also sill plate screws ? or if some one know size and length can go to hardware ,or if some one sells a kit for the 1963 dodge dart 2 dr hardtop all screws needed would buy that thanks
having same problems. call brian at auto body specialties. or go on ebay under 63 64 darts parts for sale